Nowadays, you can find those kinds of bikes anywhere in Shanghai. It seems so convenient that people ride on it just scan those bike with smartphones, when they finish riding, just lock in a right place, and DONE!
But how to use it? It seems simple, dose it really safe to scan? I can tell you absolutely YES!
Those bikes, on the picture, owned by different company. Let us see the blue one, this app named YOUON, in Chinese is 永安行, in app store you can research Chinese alphabetic writing-YONG'ANXING. However another easy way to use this bike is scan the QR code to get the app. The blue bike's QR is upon the lock, I suggest you use WeChat QR scan function. After you get the app, you need to register.
In the middle of the three bikes is the most popular sharing-bike in Shanghai Mobike, Chinese name is 摩拜单车, in app store you can research Chinese alphabetic writing-MOBAIDANCHE. Or, just scan the QR upon the lock or on the back of the bike-frame. Get the app and register.
The last one on the picture is OFO, this bike-sharing beginning in universities in China, so this kind of bike is really different from the other two, because it don't have a locator, you cant find where the bike exactly is. Be honest I have never use this yellow stuff, because the first time download the app I failed register. But I found a lot of people use OFO's WeChat public account register and pay.
Not ending, pls wait me a fill time to edit, thanks you!
If you have any question about those IN bikes, leave massage below.